Improvement in hydraulic cranes



0., M 3- Shefs-Sheet 1. Hydraulic-Crane.

Patented'Aug. 20,1878,

a snis-sneet 2..

O. H- MORGAN. Hydraulic-Crane.

No. 207,200. Patented Au 20,1878.

O. H. MORGAN. Hydraulic firane.

' No. 207,200. Pat enteo l Aug. 20,1878. I

UNITED-STATES PATENT OFFIGE.

QIlAli-LES .ll. MORGAN, OF \VORCESTE i MASSACHUSETTS.

IMPROVEMENT IN HYDRAULIC CR ANES.

Specification formingpart of Letters Patent No. 207,200, dated August 20, 1575; application tiled April 12, 1878.

To all whom it may concern;

Be it known that I, CHARLES H. MORGAN,

draulic Cranes; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and in whichh-Figure 1 represents a top or plan view of my said invention. Fig. 2 represents a side view. Fig. 3 represents, upon an enlarged scale, a vertical central section on lineA B, Fig. 1; and Fig. 4 represents, upon an enlarged scale, on line (3 D, Fig. 2, a cross-section, looking in the direction of arrow 1, Fig; 2.

To enable those skilled in the art to which my invention belongs to make and use the game, I will proceed to describe it more in de- In the drawings, the part marked E is a circular base, upon whichis mounted the step or base E, in which is fitted to turn the lower end, F, of the cylinder G, the upper end of the cylinder G being fitted or provided with.

a series of friction-rolls, a, which bear against the inner surl'ace, b, of the top plate, Hpwhich top plate and base E are firmly secured together by means of a series of upright standards, H, said standards having nuts 0 upon their ends, whereby the base and top ringplates are forced and held firmly against the shoulders d, which shoulders are.so arranged as to hold said supporting ring-plates parallel with each other.

To the upper end of the cylinder G is secured a cap-piece, I, by means of suitable bolts, and from this cap-piece rise two standards, 1, one at each side, said standards being made, in this instance, of curved form, as indicated in Fig. 1; but theymay be made of any desired shape, their object being to guide and give proper support to the crane-arm J, which, in this instance, is made oftwo pieces-and bolted together in wedge form, as indicated in Fig. 1, such crane-arm being shown in Figs. 1 and 2 as broken apart, for the purpose of bringing the parts into a smaller compass longi- .tudinally. Crane-arm J is connected to the upper end of piston J l by a rockingijoint, and

valve, M, having two heads, f f.

it is also connected to the cap-piece I by means of hinged brace-pieces K. The lower end of the piston J is not shown in section, and it will be observed that it nearly fills the cylinder G; consequently but little water is used upon the upper side of the piston-head G when the crane-arm is being lowered.

A packing-ring, K, is secured tothe cap- I piece I, and to the upper end of the cylinder G, as fully indicated in Fig. 3, for the purpose of retaining the packing e in place, while it also serves the purpose of guiding the piston J when it is forced up by the water, which enters the chamberL below the piston-head G. Upon one side of cylinder Gr is secured a'valve cylinder or chest, M, in which is arranged a Valve M is securedto the lower end of a verticallysliding rod, N, the upper end of which is connected by a link-piece, g, to the end of an arm, h, secured to the rocking shaft N, which is fitted to turn or rock in bearings secured to the upright pieces or standards 1. To the outer ends of the rocking shaft N are secured two'levers, O O, lever 0 extending back and having its rear end hinged at i to the lower end of a slotted piece,j, whose slot is fitted to receive a stud, 2, projecting from the side of the crane-arm J, a nut or heat, 3, being used to keep the slotted piece j in place upon stud2.

.As before explained, the crane-arm J is connected to the upper end of the piston by a rocking or loose joint-that is, projecting" journals or gudgeons P, (see dotted lines," Figs. 2 and 3,) extend on both sides of the piston, and enter bearing-holes in the side pieces J J which form the crane-arm J; and upon each journal P is arranged a friction-roll, P,'which works between ribs Q on the inner sides of the respective side'piece I. 'By this arrangement the piston J is retained in a vertical position when in operation.

The cylinder G is made to answer the purpose of a supporting-standard for the crane-arm and to permit it to turn freely and easily, while at the same time, being well supported,

'.friction-ro1ls a are secured'upon bolts '11- In 2 senses face, I), of'the circular opening Q in the upper supportin g-plate, E.

It will, thus be observed that cylindcr G,

a which performs the function of the supportingaccess can easily be had to all the parts for repairs or otherwise.

I The lower end, F, is fitted to turn in the vertical part E. of the base E, as before indicated; and the vertical part- E isprovided with a series of packing devices, by'means of which it can be packed water-tight.

To relieve the cylinder G'from friction as it turns, a center bolt, R, having a conical point, is screwed up through the base-plate E, as indicated in Fig; 3 of the drawings. WVater is admitted to the base by means of a pipe, R, and R is the outlet.

There are two separate passages from the cylinder G down through its lower projecting part F, whereby water admitted through the pipe R can pass up and enter the. valve chestor cylinder M, and from thence to the cylinder G, both above and below the pistomhead' G, as will be hereinafter described, and also escape back and out of the exhaust-pipe TR" after it has done its work inraisin g orlowering the piston J. I The operation is as follows: WVhcn it is desired to elevate the piston Rand -thereby the crane-arm J, oneof the lever-arm's,0 0P=O is raised so as to raise the valve M to'thezposition shown in Fig. 3, when water will-pass from the supply-pipe up through the bit-50F, and into chest or valve-cylinder M, and-through the port 4, space 5, and port 6 into .the chamber L undcr the piston-head G, and, act, ing upon the piston J, will 'elevate that, together with the crane-arm J, until stud -2 strikes in the upper end' of the slot in the piece j, when arms .0 and 0 are rotated and thrown down, thereby depressing valve 'M'so that its head f will close the ports ,4 and-:6, in

which position the piston will stand until one of the arms, 0 or O, is'depressed still farther, so as to depress head f of valveM' below ports 7 and 8, thereby permitting thesuppl-y-of-water to pass from the port-7 abweiheadp -into the passage-way 9 above the piston-head :G, thereby tbrcing said head G, piston'J',a11d crane-arm d down, the water-below the piston; head passing out of haust 10 in valve M.

port 6 and into the ;:e x- 11 So far as the construction of the valve is concerned, any other suitable arrangement may be employed for opening and closing the inlet and exhaust ports.

It will be observed that my improved hydraulic crane is compact, requires no top supports connected'with the ceiling or cross-timbers of the buildin g or room in which it is placed, while all of its parts areas readily accessible as those of an ordinary steam-engine, and can be operated by an ordinary workman.

It will also beobserved that the outer. end of the crane-arm, to which is attached the lifting-chain, moves with comparatively great rapidity, and has great extent of motion, as.

compared with the vertical motion of the piston, all of which features add to the practical value and importance of my said invention.

,Havin g described my improvements 1n. hy-

draulic cranes,- what I claim therein as new and of my invention, and desire to secure-by Letters Patent, is-

1. The combination, witlr-the cylinder in which works the crane-armelevating piston, of a top. plate, provided with anopening, Q,

and supported by upright standards 11 'H.

from a base, E,-.substantially as and ;for the purposes set forth. 2 I

. 2. The combination,.withthe-cylindcr-G, of

base-piece E -E, top pIate' H, trietion-rolls a, and upright standardsrI',substantially as .and 'forthepnrposeseetforth. H

3. The combination, with elevatingfpiston J, of crane-arm 'J and'hingedbrace-pieces K,

or either, substantially as andforthe purposes set forth. v

, 4. The combination, with crane-arm J valve -M, sliding rod N,link,g, and :rockingshaft N,

lever 0 and slotted piece and. stud- 2, substantially as and for the purposes setforth. '5. Thecombination,witlipiston Ja-ndcr'ane arm 3, of uprightsta-ndards 1,-ribs or flanges QQ, journals orgudgeons P, and;fri-ction-roll s I "19, substantially aszand jfor thepurp'oses set :forth.

-6. In a hydraulic crane,-thecombination, with thecranc-fiarm, of a :piston and .a hinged brace1or-link-suppertforiconnecting thecrane arm to-the rotating cylinder G, substantially described.

CHAS. 1H". 'MQRGAN.

Witnesses:

DANIEL B. Smite, EDWIN E. Moons. 

